CO2 Enrichment Improves Wheat Growth

Source:

http://www.co2science.org/articles/V24/jun/a3.php

Lenka, N.K., Lenka, S., Yashona, D.S.,
Shukla, A.K., Elanchezhian, R., Dey, P.,
Agrawal, P.K., Biswas, A.K. and Patra, A.K.

2021

Carbon dioxide and/or temperature elevation effect on yield response, nutrient partitioning and use efficiency of applied nitrogen in wheat crop in central India.

Field Crops Research 264:
108084, doi.org/10.1016/j.fcr.2021.108084.

" ... good news for the future of wheat production as the air's CO2 content rises.

... for the three years, Lenka et al. report wheat plants experienced a "significant yield advantage and recovery of applied fertilizer N with CO2 elevation."

... 130 ppm rise in atmospheric CO2 ... stimulated the aboveground biomass and grain yield by 12% and 15% respectively under ambient air temperature conditions and by a smaller 1% and 10% under elevated temperature conditions.

... elevated CO2 stimulated the agronomic efficiency, crop recovery efficiency, physiological efficiency and partial factor productivity of applied N by 43%, 39%, 28% and 15%, respectively, which ... undoubtedly aided in achieving the biomass increases in the elevated CO2 treatments.

... "seed N concentration was significantly higher under ET and ECET treatments as compared to ambient," which finding indicates elevated CO2 had a positive influence on the nutritional quality of the wheat.

The experiment was conducted over ... three consecutive growing seasons ...

... where elevated temperatures and elevated CO2 concentrations were maintained at approximately 1.8°C and 130 ppm above ambient conditions, respectively.

... elevated temperature treatment (achieved using infrared heaters) was applied 24 hours per day, elevated CO2 was applied during daylight hours only."